Integrasjon av datatyper og funksjoner i Creol. Implementasjon av generelle datatyper og brukerdefinerte funksjoner som tidligere måtte håndkodes i interpreten. Dette omfatter også subtyper og brukerdefinerte datatyper. I ...

Rindex (a short for RAM Index) is designed as a platform to be used top of a traditional database management system (DBMS). The main focus for this project has been on how to maximize the usage of the available main memory ...

How to enable enterprises to interchange autonomously designed information addressing the same domain, is an active research area. Present technology allows enterprises to exchange data, but when it comes to interpreting ...

In UML, the operator neg is used to specify negative, or unwanted, system behaviour. We agree that being able to specify negative behaviour is important. However, the UML neg is currently not wellsuited for this purpose, ...

Today’s computer networks have gone from typically being a small local area network, to wide area networks, where users and servers are interconnected with each other from all over the world. This development has gradually ...

Oppgaven ”Unntakshåndtering i modellering og programmering” tar for seg utfordringen med å lage mekanismer for unntakshåndtering i UML 2 sine sekvensdiagrammer. Unntakshåndtering i sekvensdiagrammer er så langt ikke del ...

Abstract This is a master thesis from a collaboration between Oslo University College and Uninett Research. Uninett have a passive monitoring device on a 2.5 Gbps backbone link between Trondheim and Narvik. They uses ...

Abstract This master thesis presents the effect that security has on a sensor network. A wireless sensor network is composed of a magnitude of sensors that together form a sensor network through self- organizing and self- ...

Generic Packages with Expandable Classes is a statically type safe programming mechanism which combines type parameterisation on the package level with class expansion. The former makes the mechanism useful for solving ...

By making use of a distributed file system, users of physically distributed computers are allowed to share data and storage resources. This paper compares three distributed filesystems: the Sun NFS filesystem, Samba and ...

Multi-protocol label switching (MPLS) integrates the label swapping forwarding paradigm with network layer routing. To deliver reliable service, MPLS requires a set of procedures to provide protection of the traffic carried ...

This document is my master thesis at the Institute of Informatics, University of Oslo. This is a multiple case study where the focus is estimating web based software projects. For consultants in the software industry, the ...

This thesis is based on an action research project where I have participated in the development of internationalisation support to a computerised health information system. The project is a Vietnamese-Norwegian collaboration ...

This research falls under the domain of information systems development in developing countries. The context of the research is Zanzibar, Tanzania. The main objective of this research was to study the existing HIS, identify ...

The thesis is about different approaches to model driven development. Much of the IT industries history can be summarized as a quest for faster and better methods for system development. This thesis has taken a closer look ...

This thesis is about software development practices, including the project management aspects, in the context of global software outsourcing. It was focused on the issues of achieving quality product namely here: software. ...

Ruby er et nytt og godt alternativ innenfor de skriptespråkene som finnes i dag og har nylig blitt tatt i bruk i den vestlige delen av verden. I denne oppgaven ser jeg i hovedsak på et Ruby-grensesnitt til Diffpack og på ...

This thesis describes the design and implementation of JavaSplitter, a prototype incremental proof search engine based on a variable splitting sequent calculus. The prover also includes modes for variable pure derivations, ...

This paper discusses how a PHP development toolbox can be implemented. One toolbox has been implemented, and the implementation is described and documented in the text. The toolbox is primarily meant to help students who ...

For a long time IT-system maintenance has been reckoned as the largest expense attached to the IT-department, but there has been relatively little research on this subject. This investigation looks at IT-system maintenance ...

This thesis describes the foundation for developing a tool that compares Java programs, or different versions of a program. The tool captures syntactic differences and contextual semantic differences as well. Syntactic ...

The aim of this thesis is the specification and development of a new UML virtual machine – UMLexe- capable of executing platform independent system specifications. For executing models, computational completeness is ...

For many reasons, large and small installations of computers can benefit from Automated Configuration Management tools. All the processes from installation, configuration, to maintenance and updating the computers can ...

In this thesis we revisit a handful of well-known experiments, using modern tools, to see if results yielded from earlier experiments are valid for today's heterogeneous networks. The traffic properties we look at are ...

In this thesis we propose a model-based approach to support data integration between heterogeneous enterprise systems. It reviews literature about interoperability, and presents several aspects of data integration problems. ...

This thesis provides contributions to the research programming language Creol (Concurrent REflective Ob ject-oriented Language). The first contribution is the EBNF grammar for Creol. The second contribution suggests how to ...

Rewriting logic can be used to prototype systems for automated deduction. In this paper, we illustrate how this approach allows experiments with deduction strategies in a flexible and conceptually satisfying way. ...

Mobile ad-hoc networks (MANETs) provide the technical platform for efficient information sharing in emergency and rescue operations. Some the data present on the scene is highly confidential and requires protection. However, ...

Background Worldwide immunization coverage shows an increase in the past years but the validity of the official reports for measuring change over time has been questioned. Facing this problem, donor supported ...

In this thesis, we reexamine the long discussion on which model is suitable for studying Internet traffic: Poisson or Long-tailed Internet traffic. Poisson model, adapted from telephone network, has been used since the ...

Visualization of large quantities of structured data is difficult when the relationships are complex. Each information element can be linked to several others at the same time, so it is not possible to merely display ...

Jeg har i denne oppgaven studert metoder for å utføre divisjon og kvadratrot av binære tall. Fokus for oppgaven har vært multiplikative divisjons- og kvadratrotalgoritmer basert på numerisk tilnærming av resiprokalet og ...

Automatisk identifisering av komplette genmodeller i eukaryotiske organismer er fortsatt en utfordrende oppgave (Zhang, 2002). Selv om det er konstante forbedringer i søkenøyaktigheten til gensøkingsprogrammer klarer de ...

A Personal Area Network consists of a number of personal and usually small devices that are carried by the user. These devices may be equipped with wireless communication interfaces, and can through these interfaces share ...

The book industry in Norway consists of many different types of companies. We have the publisher who publishes the book, the Distribution Central who distributes the book from the publisher to the book store and the book ...

Python – Realizer is basically planned to become the original Python done in C++ and Qt class library. This to make it a brand new implemented Python interpreter with a new rapid application development application extending ...

Systems where data is collected using arrays of sensors will usually contain a beamformer. When the number of active channels in the sensor array is large, as it often is in imaging systems like sonar and medical ultrasound, ...

This thesis explores some of the possibilities web-technology offers for creating an interactive learning environment for bioinformatics on the web. A set of implemented examples on how some of the basic algorithms in ...

This thesis deals with end-user support, and the tools that are necessary in order to take full advantage of information from end-users. Information from end-users can be exploited to improve the support organisation, the ...

Multimedia-applikasjoner og andre applikasjoner med høy datagjennomstrømning setter strenge krav til ytelse og krever i mange tilfeller at man kan garantere et bestemt ytelsesnivå for de forskjellige delene av systemet ...

The thesis numerically investigates the stability and convergence properties of the Parareal algorithm when it is run on the unsteady Stokes equations. The Parareal algorithm offers a parallel-in-time scheme for solving ...

The Election Markup Language (EML) is a communication language used between and within different subsystems of a computerized electoral information system. EML is defined by means of a set of 33 XML Schemas. This thesis ...

It is generally recognized that aggregated network traffic is self similar and that employment of traditional Poisson generators in network simulations may give misleading results when assessing performance. Many methods ...

This thesis is a study in the field of quality of service (QoS) aware component-based middleware and separation of concerns. QoS enabled middleware tries to preserve the safe-deployment property of components. QoS is a ...

The purpose of this thesis has been to calculate and implement the Arnold-Winther elasticity elements with strongly imposed symmetry. The next aim has been to investigate the research question: Will mixed finite element ...

Honeynett er en forholdsvis ny teknologi som kan benyttes for å innhente informasjon om datainntrengere. Det kan innhentes informasjon om blant annet motiver, taktikk, verktøy og arbeidsmetoder. Denne teknologien er ikke ...

E-learning and intelligent tutorial systems are intended to provide a tailored training and instruction for each student. Computer-based learning is supposed to provide the most possible individualized instruction at an ...

This thesis was written as a part of a master degree at the University of Oslo. The thesis work was conducted at SINTEF. The work has been carried out in the period November 2002 and April 2005. This thesis might be ...

This master thesis is a culmination of two experiments performed with children. The children got to play with Lego Mindstorms, build and program their custom made Lego robots. The first of the experiments was performed ...

The thesis is about implementing a generic mechanism, Generic Packages with Expandable Classes, in Java. The thesis desribes the syntax and the semantics for including the generic mechanism into the Java programming language. ...

Software development has reached a new step in the evolution of software developing tools and languages. From the beginning of software development there has been major changes in how software is developed. From the basic ...

I dag blir datamaskiner kun brukt som avanserte skrivemaskiner hos bokforlagene. J.W. Cappelens Forlag ønsker å effektivisere prosessene et manus går igjennom fra det kommer fra forfatter til det skal sendes til trykk ved ...

This thesis presents an analysis of the information infrastructure for distribution of music to mobile phones. The focus is kept on the users/ listeners throughout the thesis. This study is of importance as there are no ...

This thesis investigates the challenges of scaling and standardizing Health Information Systems (HISs) in the context of developing countries. This investigation is based on case studies and action research interventions ...

This study investigated the factors contributing to unsustainable health information systems and low level of use. Approaches to development and implementation of an integrated district-based health information system ...

Public health systems rely on many different components: the institutions of Ministry of Health; the health staff and the information and communication systems used by these organizations to collect, analyze and disseminate ...

Analog to digital conversion has become, like many other processes drawn more and more into the digital domain. Delta-Sigma A/D conversion avoids some of the challenges with the digital components of traditional A/D ...

Model-driven development is by many predicted to become the next big leap in software development. This thesis investigates how quality of service (QoS) concerns could be incorporated in a model-driven development process. ...

In the present day, distributed systems are becoming more and more important. It can be difficult to stop such systems to perform an update, either because they are critical infrastructure, like air traffic control systems, ...

The aim of this thesis is the specification, development and empirical assessment of a new security mechanism Promon capable of protecting existing programs against control flow attacks. Buffer overflows receive special ...

IEEE 802.11i er en standard som spesifiserer sikkerhet i IEEE 802.11 trådløse nettverk. Denne oppgaven tar for seg oppgradering av infrastrukturbaserte 802.11 trådløse nettverk til 802.11i og ser på konsekvenser for brukeren. ...

This paper deals with security aspects of the web-portal Altinn and shows how these aspects can be formalized and modeled in the high level programming language, Maude. Thereafter there will be given examples of how this ...

The research presented in this Masters Thesis identifies the comprehension strategies used by novice programmers during maintenance tasks on a previously unknown application in Java. In addition, the difficulties the ...

The research presented in this thesis evaluates three methods for data collection during software engineering experiments: the concurrent and retrospective think-aloud methods and the feedback-collection method. A controlled ...

When designing webpages for e – commerce it is benefitial to have the users in mind. Users act differently according to their previous experiences with the web. Trying to find out what kind of common denominators users of ...

Many of today's critical systems offers services that depend upon the correct behaviour of one single physical unit. An attacker able to gain control over one component by exploiting a vulnerability its software, only needs ...

In today's modern society, the increasing demands for connectivity and accessibility place computers in ever larger internetworks. As more and more computers become globally accessible, the number of threats from random ...

This thesis is drawn from an ongoing large-scale action research project Health Information Systems Program (HISP), which aims to develop sustainable computer based Health Information Systems (HIS) in and for developing ...

This research falls under the area of design and implementation of information systems in developing countries. I have studied the health information systems in Tanzania using case studies in Ilala Municipal, situated in ...

The goal of this thesis was to develop an application facilitating patient monitoring by providing a roaming monitor that a physician can carry with him or her at any time. The thesis itself presents an overview of issues ...

Sammendrag Flernivålogikk er ikke så mye brukt i kommersielle systemer, på grunn av enkelte problemer med denne typen logikk. I denne oppgaven skal man lage et system ved hjelp av flernivålogikk. Flernivålogikk har enkelte ...

Streamed multimedia is becoming common on the Internet as the bandwidths increase for end-users. To stream data with high bitrates to many concurrent users, servers are needed that can handle these extreme loads. Implementing ...

Risk handling of oil recovery projects has become more important as the biggest and least complicated oil fields have been exploited. As exploitation of smaller or more complex oil fields are not as obviously profitable, ...

Målet med denne oppgaven er å undersøke hvilken innvirkning en utvidelse av den tradisjonelle forståelsen av begrepet mobilitet til å omfatte ikke bare fysisk og tidsmessig kontekst, men også sosial kontekst, har på ...

I denne oppgaven har man valgt å se på sikkerhetsløsninger knyttet til skoleverket. Man har ønsket å se på i hvilken grad ulike aktører benytter IT-systemer, og hvilke sikkerhetsmekanismer som behøves. I skoleverket er ...

In an given system on chip the different IP cores have different capacity needs for communications. Given a fixed communication capacity between two or more IP cores and more than one set of communicating cores with different ...

This thesis deals with the problems and solutions encountered during the development of PyMek. PyMek is a make-like tool for building software projects. PyMek uses XML-based buildfiles for project description, and MD5 ...

En måte å oppdage ukjente genmodifiseringer er å konstruere et mikroarray med et bestemt probesett. Probesettet er valgt ut ved biokombinatoriske reduksjoner som beskrevet av Nesvold (Nesvold et.al, 2005). Før den endelige ...

Denne oppgaven inngår som en del av Creol-prosjektet. Creol er et høy-nivå objekt-orientert modelleringsspråk for åpne distribuerte systemer. Språket er formelt definert med semantikk i omskrivningslogikk. I Creol tilbys ...

Abstract The research in this thesis focuses on the users of spreadsheet (Excel) and those who teach it. Several investigations have shown that user teaching and follow-up of users are important factors to achieve reasonable ...

This document contains a description of the network infrastructure belonging to Oslo University College. It takes a large a complicated network and breaks it up into smaller and more manageable parts for a closer examination. ...

Denne oppgaven omhandler utviklingen av et grafisk verktøy for automatisk gruppering og degruppering av enkle dataorienterte UML- klassediagrammer. Grupperingen vil resultere i klasser som kan brukes som utgangspunkt for ...

Creating software systems by composing already existing reusable software is a vision which has been driving the development of software technologies and paradigms for a long time. By combining visual modelling and service ...

This project presents a new CMOS-MEMS pressure sensor including an analog-to-digital converter on chip. The entire system is fabricated in a standard 0.6um CMOS process from Austria Micro Systems (AMS), with only one ...

Det er viktig å anvende teorier fra andre disipliner enn informatikk for å gi et mer nyansert bilde av fagfeltet enn hva det selv klarer å gi. Informatikk er mer enn programmering og det trengs mer enn ren teknisk kunnskap ...

The goal of this thesis is to find a strategy for adaptive video streaming suitable for the Distributed Media Journaling project (DMJ). DMJ focuses on capturing and indexing distributed multimedia content in real time. An ...

In this thesis we address how a global contractor approaches the creation of a standard framework for service and performance management for application outsourcing and how this standard framework is localized. Based on a ...

Abstract The focus of this project will be on studying the behaviour of throughput changes of the cell when nodes send their data in different bit rate. The main goal of this thesis was to develop techniques and tools ...

MAS (Multi-Agent Systems), classifiers and other AI (Artificial Intelligence) techniques are increasingly becoming more common. The capability to handle complex and advanced problems by MAS was explored in this thesis. An ...

The marked for ICT outsourcing is under continuous growth. The trial and fail approach from the early outsourcing projects is being replaced by professional approach that offers a broad specter of services. However, many ...

A data warehouse enables enterprise-wide analysis and reporting functionality that is usually used to support decision-making. Data warehousing system integrates data from different data sources. Typically, the data are ...

In distributed systems applications must compete for access to resources. Existing algorithms for competing use of resources often only offer the best effort-guarantee. Best effort has no guarantees for the time data uses ...

This is a Master’s degree thesis from the Department of Informatics, University of Oslo, Norway. It is about the user’s experience of tickets in the transition from paper-based tickets to digital Radio Frequency Identification ...

The thesis investigates how narrative techniques or a narrative form can support the design of political websites. The emphasis is on how known dilemmas, related to narrative and new media, can be resolved in the context ...

The first mobile commerce services emerged on the Norwegian market in the late nineties and in constant growth. This paper looks at the status on mobile commerce and e-money in Norway today, which participants exists on ...

It has become more and more common to apply the Model-Driven Architecture (MDA) to development of systems based on the Service-oriented architecture (SOA), especially Web services. Standards for development of Web services ...

I datamaskiner må representasjoner baseres på biter og bytes. Dette gir ekstra utfordringer i forbindelse med representasjon av verdier som har en romlig utstrekning, fordi slike verdier ikke lar seg representere så direkte ...

The increasing use of distributed real-time embedded systems in modern application domains introduces new challenges in developing software [1]. These systems present design constraints such as low memory and reduced ...

Development of applications and protocols for wireless ad-hoc networks has always been a challenge. Spe-cific characteristics such as frequent topology changes due to nodes moving around, popping up or being turned off, ...